GCC and Clang are able to check the format arguments given to a
function and warn the user if there is a error in the format arguments
or if there is a potential uncontrolled format string security problem
in the code. GCC does this automatically for some functions like
printf(), but it is also possible to annotate other functions in a way
that it will check them too. This feature is used by glibc for many
functions. This patch adds the attribute to the some functions of musl
expect for these functions where gcc automatically adds it.
GCC automatically adds checks for these functions: printf, fprintf,
sprintf, scanf, fscanf, sscanf, strftime, vprintf, vfprintf and
vsprintf.
The documentation from gcc is here:
https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html
The documentation from Clang is here:
http://clang.llvm.org/docs/AttributeReference.html#format-gnu-format
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
SVN-Revision: 48467
vdso support is available on mips starting with kernel 4.4, see kernel
commit a7f4df4e21 "MIPS: VDSO: Add implementations of gettimeofday()
and clock_gettime()" for details.
These are my micro benchmark results for 1.000.000 calls to
clock_gettime(CLOCK_MONOTONIC, &tp)
without vdso:
root@OpenWrt:/# time ./vdso-test
real 0m 0.95s
user 0m 0.24s
sys 0m 0.70s
with vdso:
root@OpenWrt:/# time /usr/bin/vdso-test
real 0m 0.35s
user 0m 0.34s
sys 0m 0.00s
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
SVN-Revision: 48466
Current musl reports the peer (remote) address of a point-to-point
interface and does not store the local address at all.
Apply the same special treatment of IFA_LOCAL to musl's getifaddrs() which
is also used in glibc and uclibc.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
SVN-Revision: 47488
This patch fixes corner case in open_memstrem, when stream is created,
but nothing is written.
This case is present in tgtadm, tgtd management tool.
Signed-off-by: Maxim Storchak <m.storchak@gmail.com>
SVN-Revision: 47339
Make musl provide libssp_nonshared.a and make GCC link it unconditionally
if musl is used. This should be a no-op if SSP is disabled and seems to be
the only reliable way of dealing with SSP over all packages due to the mess
that is linkerflags handling in packages.
Signed-off-by: Steven Barth <steven@midlink.org>
SVN-Revision: 46108
Currently the OpenWRT boot scripts write the timezone configuration to
/tmp/TZ, relying on the behaviour of uClibc that the timezone is read
from /etc/TZ if no TZ env variable is found.
This works because /etc/TZ is a symlink to /tmp/TZ.
Musl libc however only reads the timezone from the TZ env variable and
if it doesn't find it or it's empty, it will look for a zoneinfo
file, that doesn't exist.
So in musl builds no timezone is ever set.
This patch fixes the issue by having musl libc behave like uClibc: if no
TZ env variable is found it will try to load it from /etc/TZ.
Signed-off-by: Gianluca Anzolin <gianluca at sottospazio.it>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 46069
Patch to 2015-06-04 to fix ldso related regressions on PPC and MIPS.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 45886
musl libc doesn't support the GNU getopt extension to parse non-option
arguments when the optstring starts with '-'.
This extension is used by some utilities, notably iptables, that
currently return with errors even with perfectly valid invocations.
The patch adds the code needed by getopt.c and getopt_long.c to
implement that extension.
Signed-off-by: Gianluca Anzolin <gianluca@sottospazio.it>
SVN-Revision: 43309
Hauke Mehrtens
Felix Fietkau
Jo-Philipp Wich
John Crispin
Steven Barth
Matteo Croce